Hello,

I'm trying to run a sample c# application thats been verified to work on
earlier versions of visual studio but doesn't seem to work on Visual Studio
2005.  It's very basic sample code the connects to a referenced com object.
I can access properties and run methods on the COM object but I'm not
receiving any events back to my c# .net code.

Are there any changes to Visual Studio 2005 or .NET 2.0 that might break
code that used interop?

The publisher of the COM object is eSignal, a company that supplies real
time and historic market data.  They don't use Visual Studio 2005, so they
aren't able to tell me why it isn't working with the latest Visual Studio.
I've copied a message sent to them earlier today that explains what I'm
doing in code.  I'm hoping that someone at Microsoft might able able to shed
a little light on this issue..

Thanks!!
-Charley

---- MESSAGE to ESIGNAL FOLLOWS

Here are the details of what I'm doing:

1.  This is a visual c# project built in Visual Studio 2005

2.  I import IESignal into the project by using project/add reference

3.  I create a new instance of the HooksClass like this

private IESignal.HooksClass esignal;

esignal = new IESignal.HooksClass();

4.  I set the application like this

esignal.SetApplication("xtaltrader");

5.  I check to see if I'm entitled like this:

int ent = esignal.IsEntitled;

I notice that esignal.IsEntitled returns an Int32 NOT a boolean.  I also
notice it takes about 3 seconds to for the IsEntitled property to change
from 0 to 1 after I SetApplication.  (I believe this is due to the startup
time for the eSignal application).

6.  I setup the QuoteChanged event handler like this

esignal.OnQuoteChanged += new
IESignal._IHooksEvents_OnQuoteChangedEventHandler(esignal_OnQuoteChanged);

7.  I request the symbol stream like this:

esignal.RequestSymbol("yhoo", 1);

Note that RequestSymbol takes a string and an INT not a boolean.  This
probably has to do with the way .net interop wraps the COM object.   I can
NOT pass a boolean to RequestSymbol.

8.  I wait for the event to be fired here

private void esignal_OnQuoteChanged(string s)

       { MessageBox.Show("The event fired!"); }

9.  Nothing happens - the OnQuoteChanged method never gets executed.